Reconnecting rivers flowing to the Vasse Estuary – Hydrological and water quality modelling report

This Reconnecting Rivers project is part of the Revitalising Geographe Waterways program , which aims to improve the ecological health and amenity of waterways in the Geographe region.

The Department of Water and Environmental Regulation (DWER) developed a one-dimensional (1D) dynamic flood model using the software package MIKE11. The model was calibrated to observed flood events and long-term monitoring of water levels in the Vasse and Wonnerup estuaries. The model was used to quantify the change in flood regime for the 1% annual exceedance probability (AEP) 1 event for each option and this was compared with flood development strategies and building floor level in affected areas. The flood modelling was supported by a comprehensive analysis of flood hydrology for the catchment.

Read the full report here.

For more information about this report, contact Joel Hall 9726 4103 or Peta Kelsey 6364 7838, Water Science Branch, Department of Water and Environmental Regulation, Western Australia.